AssetDatabase.LoadAssetAtPath

Parameters

Returns

Object The asset matching the parameters.

Description

Returns the first asset object of type type at given path assetPath.

Some asset files may contain multiple objects. (such as a Maya file which may contain multiple Meshes and GameObjects). All paths are relative to the project folder, for example: "Assets/MyTextures/hello.png".

Note:
The assetPath parameter is not case sensitive.
ALL asset names and paths in Unity use forward slashes, even on Windows.
This returns only an asset object that is visible in the Project view. If the asset is not found LoadAssetAtPath returns Null.

using UnityEngine;
using UnityEditor;

public class MyPlayer : MonoBehaviour
{
    [MenuItem("AssetDatabase/LoadAssetExample")]
    static void ImportExample()
    {
        Texture2D t = (Texture2D)AssetDatabase.LoadAssetAtPath("Assets/Textures/texture.jpg", typeof(Texture2D));
    }
}

Additional resources: AssetDatabase.LoadMainAssetAtPath, AssetDatabase.LoadAllAssetsAtPath.